CN204349469U - A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net - Google Patents
A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net Download PDFInfo
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- CN204349469U CN204349469U CN201420778795.4U CN201420778795U CN204349469U CN 204349469 U CN204349469 U CN 204349469U CN 201420778795 U CN201420778795 U CN 201420778795U CN 204349469 U CN204349469 U CN 204349469U
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- current transformer
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- important load
- electric automobile
- load
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Abstract
A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net, comprise a current conversion station containing AC/DC current transformer, a community distribution box containing DC/DC current transformer, at least one circuit breaker or switch, at least one comprises the important load change of current case of DC/AC current transformer and two-way DC/DC current transformer, at least one comprises user's change of current case of DC/AC current transformer and two-way DC/DC current transformer, at least one important load, at least one traditional load, at least one electric automobile charging pile.Tradition load is the load adopting 220V interchange residential electricity consumption to power present stage.With existing registering one's residence for electric automobile, power distribution network is carried out compared with the scheme of dilatation, in the utility model, suggest plans is not changing first wife's power network line structure and is not affecting customer charge electricity consumption, and when without the need to replacing or upgrading cable, Jin Dui community distribution box is transformed, resident's change of current case is installed to user, the power transmission capacity of pow of power distribution network can be promoted.There is the advantages such as cost is low, quantities is little, reliability is high, extensibility is good.
Description
Technical field
The utility model belongs to power distribution network transmitted power capacity increasing technique field, be specifically related to a kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net.
Background technology
Along with the anxiety of non-renewable fossil energy and the development of battery technology, the electric automobile of replacing oil by electricity is energy-conservation as a new generation to be subject to the whole world with the vehicles of environmental protection and to pay close attention to and apply.In electric vehicle industrialization evolution, except the technical bottleneck of itself, urgently to be resolved hurrily is power distribution network dilatation problem.Existing AC distribution web frame schematic diagram is as shown in the Fig. 1 in Figure of description, when the extensive Stochastic accessing of electric automobile, not only large to the demand of electric automobile charging pile, and larger load impact can be formed to exchanging distribution, cause the significantly lifting of distribution network load, obviously, existing AC distribution net capacity of trunk be difficult to meet electric automobile register one's residence on a large scale after capacity of trunk demand, registering one's residence to the demand of power distribution network capacity to adapt to high permeability electric automobile, must take measures to carry out dilatation to power distribution network.At present, solution for power distribution network dilatation problem mainly contains two kinds: the first is to the direct upgrading of power distribution network Central Plains power transmission cable, former power transmission cable is replaced by the larger cable of conveyance capacity, this scheme can according to workload demand significantly dilatation, but quantities is huge, long in time limit, cost intensive, consumptive material waste is serious, and serious on resident living impact during power transmission cable upgrading; The second is when not changing first wife's grid power transmission line construction, adopt power transmission line dynamic capacity increase technology, the program has the advantage not changing transmission line structure, but need extra increasing to detect in a large number and communication equipment, and the actual increasable transmission capacity of transmission line is subject to natural environment influence, therefore the normal technology of dynamic compatibilization is often applied in ultra-high-tension power transmission line, considers the factor such as cost, maximum delivery capacity increasing degree and be difficult to application in low-voltage network.
Summary of the invention
For prior art above shortcomings, improve that scheme exists that cost is high, quantities is large for solving existing power distribution network transmission line capability, that long construction period, transmission line capability promote amplitude is little and to problems such as customer impact are serious, and consider the high request of important load to power supply reliability, the utility model is a kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net, for tackle large-scale electric automobile register one's residence after the increase of power distribution network peak load.Circuit breaker or switch are installed to the user's branch road containing important load, improves the power supply reliability of important load, there is the advantages such as cost is low, quantities is little, reliability is high, extensibility is good.
The technical scheme that the utility model is taked is:
Be applicable to that electric automobile registers one's residence containing an important load DC distribution net,
Comprise a current conversion station containing AC/DC current transformer,
A community distribution box containing DC/DC current transformer,
A switch member,
At least one important load change of current case,
At least one user's change of current case,
At least one important load,
At least one traditional load,
At least one electric automobile charging pile;
The described current conversion station AC containing AC/DC current transformer is connected with external communication network, and described current conversion station DC side is connected with described community distribution box;
The described community distribution box terminal voltage upper side containing DC/DC current transformer is connected with described current conversion station, and the terminal voltage of described community distribution box comparatively downside is connected with each user's branch road;
Described switch member is installed on containing in important load user branch road, and switch member one end is connected with community distribution box, and the switch member other end is connected with important load change of current case;
A DC/AC current transformer and the first two-way DC/DC current transformer is comprised in described important load change of current case, wherein the DC side of a DC/AC current transformer is connected with switch member, the AC of the one DC/AC current transformer is connected with important load, and the terminal voltage upper side of the first two-way DC/DC current transformer is connected with switch member, the terminal voltage of the first two-way DC/DC current transformer comparatively downside is connected with electric automobile charging pile;
The 2nd DC/AC current transformer and the second two-way DC/DC current transformer is comprised in described user's change of current case, wherein the DC side of the 2nd DC/AC current transformer is connected with community distribution box, the AC of the 2nd DC/AC current transformer is connected with traditional load, and the terminal voltage upper side of the second two-way DC/DC current transformer is connected with community distribution box, the terminal voltage of the second two-way DC/DC current transformer comparatively downside is connected with electric automobile charging pile;
Described important load is connected with the AC of a DC/AC current transformer in important load change of current case; Described traditional load is connected with the AC of the 2nd DC/AC current transformer in user's change of current case;
The terminal voltage of described electric automobile charging pile and the two-way DC/DC current transformer in important load change of current case or user's change of current case comparatively downside is connected.
Described switch member is circuit breaker or air switch.
Each user installs user's change of current case respectively, and user's change of current case all leaves electric automobile charging pile interface.
Compared to the technology of existing raising distribution network line transmission line capability, the utility model tool has the following advantages:
1), the utility model without the need to changing first wife's power network line structure, and without the need to the cable changed or existing power distribution network of upgrading uses, has the advantage that quantities is little, realization is convenient, little to customer impact.
2), the lifting amplitude of the utility model transmission line capacity can be regulated by the amplitude of power distribution network AC line voltage, the demand to distribution line capacity after registering one's residence with the electric automobile meeting different scales, and flexible design is applied widely, highly versatile.
3), the utility model mesolow DC/DC current transformer adopts bi-directional configuration, can realize that electric energy is counter to be sent, and realizes the uninterrupted power supply to important load under supplying power allocation system fault conditions, improve system reliability together with circuit breaker or switch.
4), in the utility model user's change of current case all leaves electric automobile charging pile interface, guarantees that user can be charging electric vehicle easily and flexibly after adding electric automobile, is highly suitable for the situation that electric automobile is registered one's residence.
5), described direct-flow distribution system emphasis take into account the power supply reliability problem of community important load, and by the synergy of branch road serial connection circuit breaker or switch and two-way DC/DC current transformer, guarantees important load power supply reliability.
6) the DC/DC current transformer, in important load change of current case and user's change of current case is two-way, and electric automobile charging pile can give other load by the anti-power transmission of two-way DC/DC current transformer.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of existing alternating-current system.
Fig. 2 is the structural representation that the utility model is applicable to the DC distribution net embodiment containing important load that electric automobile is registered one's residence.
Embodiment
As shown in Figure 2, a kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net, comprise: a current conversion station 1 containing AC/DC current transformer, a community distribution box 2 containing DC/DC current transformer, a switch member 3, switch member 3 is circuit breaker or air switch, at least one comprises the important load change of current case 4 of a DC/AC current transformer 5 and the first two-way DC/DC current transformer 6, at least one comprises user's change of current case 7 of the 2nd DC/AC current transformer 8 and the second two-way DC/DC current transformer 9, at least one important load 10, the load that at least one traditional load 11(tradition load 11 adopts 220V interchange residential electricity consumption to power for present stage), at least one electric automobile charging pile 12, described current conversion station 1 AC containing AC/DC current transformer is connected with external communication network, and DC side is connected with community distribution box 2, the described community distribution box 2 terminal voltage upper side containing DC/DC current transformer is connected with current conversion station 1, and (electric pressure is by the impact of first wife's power grid cables herein, for 11kV AC distribution net cable, direct voltage can be operated in 30kV), terminal voltage comparatively downside is connected (electric pressure is subject to the impact of inverter and transmission line capability, can be arranged on about 800V) herein with each user's branch road, described circuit breaker or switch 3 are installed in containing in important load user branch road, and one end is connected with community distribution box 2, and the other end is connected with important load change of current case 4, DC/AC current transformer 5 and a first two-way DC/DC current transformer 6 is comprised in described important load change of current case 4, wherein the DC side of a DC/AC current transformer 5 is connected with circuit breaker or switch 3, AC is connected with important load 10, and the terminal voltage upper side of the first two-way DC/DC current transformer 6 is connected with circuit breaker or switch 3, and (electric pressure is subject to the impact of inverter and transmission line capability herein, about 800V can be arranged on), terminal voltage comparatively downside is connected (be electric automobile charging pile voltage, Typical ranges is 200-450V) herein with electric automobile charging pile 12, the 2nd DC/AC current transformer 8 and the second two-way DC/DC current transformer 9 is comprised in described user's change of current case 7, wherein the DC side of the 2nd DC/AC current transformer 8 is connected with community distribution box 2, AC is connected with traditional load 11, and the terminal voltage upper side of the second two-way DC/DC current transformer 9 is connected with community distribution box 2, terminal voltage comparatively downside is connected with electric automobile charging pile 12, described important load 10 is connected with the AC of a DC/AC current transformer 5 in important load change of current case 4, described traditional load 11 is connected with the AC of the 2nd DC/AC current transformer 8 in user's change of current case 7, the terminal voltage of described electric automobile charging pile 12 and the two-way DC/DC current transformer 9 of the first two-way DC/DC current transformer 6 or the second in important load change of current case 4 or user's change of current case 7 comparatively downside is connected.
Consider the cable of same insulation thickness and core section, the ability of the energy force rate tolerance alternating voltage of its tolerance direct voltage is about high more than 3 times, the distribution line of the existing alternating-current system shown in Fig. 1, busbar voltage is 10kV, therefore, when not changing the line construction of alternating-current system shown in Fig. 1, the DC power distribution line voltage shown in Fig. 2 can reach more than 30kV.(present Urban Medium Voltage Distribution Network majority adopts cable, provides feasibility to suggested plans enforcement).Further consider that relation between ac transmission voltage peak and effective value and transmission line power factor are on the impact of actual fed capacity, under the prerequisite not changing the existing AC distribution net cable shown in Fig. 1, DC distribution form shown in sample graph 2, the transmission line capability of distribution line can improve about 4.7 times in theory (herein because considering the concrete connected mode of wire, 10kV is generally 3 distribution wires, set bipolar supply power mode herein, namely two busbar voltages are respectively a positive and negative 30kV and ground wire, and so reality can improve capacity is exactly about 4.7 times).In embodiment illustrated in fig. 2, the AC rectification of 110kV is become the direct current of positive and negative 30kV by current conversion station 1, and electric energy is delivered to community distribution box 2 with the form of direct current by distribution line; The direct voltage of positive and negative 30kV is down to positive and negative 800V by the DC/DC current transformer in community distribution box 2, delivers in each user's branch road; Be equiped with circuit breaker or switch 3 in important load branch road, when power distribution network breaks down, circuit breaker or switch 3, by important load 10 and Fault Isolation, ensure that important load 10 is from fault effects; Containing in user's branch road of important load, a DC/AC current transformer 5 in important load change of current case 4 by the DC inverter of positive and negative 800V be the alternating current of 220V for important load 10, the DC power conversion of positive and negative 800V is that the powered by direct current electrical automobile charging pile 12 of 400V uses by the first two-way DC/DC current transformer 6; Not containing in user's branch road of important load, the DC inverter of positive and negative 800V is that the alternating current of 220V uses for the powered by direct current electrical automobile charging pile 12 that the DC power conversion of positive and negative 800V is 400V by the two-way DC/DC current transformer 9 of traditional load 11, second by the 2nd DC/AC current transformer 8 in user's change of current case 7.
As shown in Figure 2, the first two-way DC/DC current transformer 6,9 is installed respectively in important load change of current case 1 and user's change of current case 7, whether the first two-way DC/DC current transformer 6 and 9 whether connecting electric automobile charging pile load, can use electric automobile concrete condition according to resident and determine.According to the difference of electric network state, the operating state of DC distribution net has 2 kinds:
1, when electrical network normally runs: DC circuit breaker does not work, the electric energy that traditional load 11 in DC distribution net, important load 10, electric automobile charging pile load 12 provide by external communication network supplies through distribution line transmission, now, electric automobile charging pile all absorbs and storage of electrical energy from power distribution network as load.
2, during grid collapses: for containing important load branch road, which kind of fault no matter there is in power distribution network, for guaranteeing that important load is unaffected, disconnect immediately containing the circuit breaker installed in important load branch road or switch 3, cut off contacting of important load branch road and DC distribution net, the electric energy simultaneously stored in electric automobile charging pile 12 to the anti-power transmission energy of important load, ensures that the power supply of important load is continuous by the first two-way DC/DC current transformer 6 in important load change of current case 4; After pending fault is got rid of, circuit breaker or switch 1 close again, drop in DC distribution net by the branch road containing important load, recover operating state when electrical network normally runs.For the user's branch road not containing important load, then can be subject to impact in various degree because of the difference of position of failure point, pending fault can recover normal work after getting rid of.
In the utility model specific embodiment shown in Fig. 2, the 2nd DC/AC current transformer 8 in a DC/AC current transformer 5 in the DC/DC current transformer that the AC/DC current transformer that current conversion station 1 comprises, community distribution box 2 comprise, important load change of current case 4 and the first two-way DC/DC current transformer 6, user's change of current case 7 and the electric pressure of the second two-way DC/DC current transformer 9 all carry out designing and setting forth with an example, can select according to real system capacity requirement and determine electric pressure in actual applications.
In sum, direct-flow distribution system of the present utility model is not changing first wife's power network line structure and is not affecting the electricity consumption of aborigines' load, and when without the need to replacing or upgrading cable, Jin Dui community distribution box is transformed, resident's change of current case is installed to user, just the power transmission capacity of pow of power distribution network can be promoted, there is the advantage that distribution line loss is little, quantities is little, extensibility is good, and the amplitude of institute's lifting power distribution network transmission line capability can meet large-scale electric automobile completely registers one's residence to the demand of power distribution network transmission capacity, exploitativeness is strong, reliability is high; In addition, the utility model considers that in community, important load need ensure the demand of uninterrupted power supply, installs circuit breaker or switch, ensure that the power supply reliability of important load to the user's branch road containing important load.Therefore, the utility model is that a kind of reliability is higher and be highly suitable for the DC distribution net containing important load that electric automobile registers one's residence.
Above-mentioned enforcement example of the present utility model is only for the utility model example is described, and is not the restriction to execution mode of the present utility model.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot give exhaustive to all execution modes.Every belong to the technical solution of the utility model the apparent change of amplifying out or variation be still in the row of protection range of the present utility model.
Claims (3)
1. be applicable to that electric automobile registers one's residence containing an important load DC distribution net,
Comprise a current conversion station (1) containing AC/DC current transformer,
A community distribution box (2) containing DC/DC current transformer,
A switch member (3),
At least one important load with change of current case (4),
At least one user's change of current case (7),
At least one important load (10),
At least one traditional load (11),
At least one electric automobile charging pile (12); It is characterized in that,
Described current conversion station (1) AC containing AC/DC current transformer is connected with external communication network, and described current conversion station (1) DC side is connected with described community distribution box (2);
Described community distribution box (2) the terminal voltage upper side containing DC/DC current transformer is connected with described current conversion station (1), and the terminal voltage of described community distribution box (2) comparatively downside is connected with each user's branch road;
Described switch member (3) is installed on containing in important load user branch road, and switch member (3) one end is connected with community distribution box (2), and switch member (3) other end is connected with important load change of current case (4);
A DC/AC current transformer (5) and the first two-way DC/DC current transformer (6) is comprised in described important load change of current case (4), wherein the DC side of a DC/AC current transformer (5) is connected with switch member (3), the AC of the one DC/AC current transformer (5) is connected with important load (10), and the terminal voltage upper side of the first two-way DC/DC current transformer (6) is connected with switch member (3), the terminal voltage of the first two-way DC/DC current transformer (6) comparatively downside is connected with electric automobile charging pile (12);
The 2nd DC/AC current transformer (8) and the second two-way DC/DC current transformer (9) is comprised in described user's change of current case (7), wherein the DC side of the 2nd DC/AC current transformer (8) is connected with community distribution box, the AC of the 2nd DC/AC current transformer (8) is connected with traditional load (11), and the terminal voltage upper side of the second two-way DC/DC current transformer (9) is connected with community distribution box (2), the terminal voltage of the second two-way DC/DC current transformer (9) comparatively downside is connected with electric automobile charging pile (12);
Described important load (10) is connected with the AC of a DC/AC current transformer (5) in important load change of current case (4); Described traditional load (11) is connected with the AC of the 2nd DC/AC current transformer (8) in user's change of current case (7);
The terminal voltage of described electric automobile charging pile (12) and the two-way DC/DC current transformer in important load change of current case (4) or user's change of current case (7) comparatively downside is connected; The load that tradition load (11) adopts 220V interchange residential electricity consumption to power for present stage.
2. according to claim 1 a kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net, it is characterized in that, described switch member (3) is circuit breaker or air switch.
3. according to claim 1 a kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net, it is characterized in that, each user installs user's change of current case (7) respectively, and user's change of current case all (7) leave electric automobile charging pile interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420778795.4U CN204349469U (en) | 2014-12-11 | 2014-12-11 | A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420778795.4U CN204349469U (en) | 2014-12-11 | 2014-12-11 | A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204349469U true CN204349469U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420778795.4U Withdrawn - After Issue CN204349469U (en) | 2014-12-11 | 2014-12-11 | A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204349469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485695A (en) * | 2014-12-11 | 2015-04-01 | 三峡大学 | Important-load-containing direct current power distribution network applied to home-entry of electric vehicle |
| US20220116075A1 (en) * | 2020-10-08 | 2022-04-14 | Melexis Technologies Nv | Transmitter for power line communication |
-
2014
- 2014-12-11 CN CN201420778795.4U patent/CN204349469U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485695A (en) * | 2014-12-11 | 2015-04-01 | 三峡大学 | Important-load-containing direct current power distribution network applied to home-entry of electric vehicle |
| CN104485695B (en) * | 2014-12-11 | 2016-11-23 | 三峡大学 | A kind of be applicable to that electric automobile registers one's residence containing important load DC distribution net |
| US20220116075A1 (en) * | 2020-10-08 | 2022-04-14 | Melexis Technologies Nv | Transmitter for power line communication |
| US11552677B2 (en) * | 2020-10-08 | 2023-01-10 | Melexis Technologies Nv | Transmitter for power line communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150520 Effective date of abandoning: 20161012 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |